Place the shingle or plywood onto the tar and spread more of the tar around the edges of your patch.
Slate roof and wood beams leaking brown liquid.
Before you leave your attic use a measuring tape to roughly map out where the leak is so you can find it once the rain stops.
The damage from the expansion allows the wood sap to bleed or sweat out from deep within the beam.
The nail will provide a path for the water.
In an attempt to decrease that pressure the molecules begin to move outwardly that results in an expansion or wound in the wood.
You can also face expensive wood framing repairs if water leaks down into ceiling joists and walls.
The flashing and the guttering are actually the weakest points of a slate roof so look at them first.
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5 common reasons for a roof leak.
You also need to check the sheathing under the slates when you re fixing leaks.
Insert a nail in the hole where water is leaking through the roof.
Step 2 place a bucket underneath the nail to catch the water as it runs down the nail.
Spongy and weak water damaged wood can end in peeling paint damaged ceilings and buckled wall coverings.
Don t automatically assume it s the slate roof that s at fault.
Use a putty knife to spread the tar into the leaking hole on the inside of your roof.